Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
December 6, 2023
Submitted
January 16, 2024
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 7377H4
Aircraft serial
32462
Aircraft time
64,648 hours, 38,599 cycles
Part
Seat Track
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CABIN SEAT TRACK HAS CORROSION IN WELL AND ON TOP OF CROWN AT BS 578+2; BS 639+11; BS 727+14; RBL 45; WL 208<[01] COMPLETED STEP 1; UPDATED TABLE;[02] COMPLETED STEPS 1-7.;[03] PARTIAL STEP 8; OK TO INSTALL NEW PASSENGER CABIN SEAT TRACK STA 540-727B; RBL 45; WL 208;[04] PARTIAL STEP 8 REMOVED PASSENGER CABIN SEAT TRACK FROM STA 540-727B; RBL 45; WL 208; OK TO INSTALL NEW PASSENGER CABIN SEAT TRACK STA 540-727B; RBL 45; WL 208;[05] VERIFIED CORRECTIVE ACTION STEPS 3 AND 4.;[06] RECEIVED REPLACEMENT SEAT TRACK P/N ATSHFAB-100-313 FABRICATED ON IN HOUSE SERVICE REQUEST# 553595 PER DRAWING# ATSHFAB-100-313 REV A. PART IS MARKED AS PER ATS QCM 4.35.26. OK TO INSTALL SEAT TRACK.;[07] PARTAIL STEP 8 REAM NEW SEAT TRACK FASTNER HOLES TO 5/16 IAW AMM 51-40-05-0G-0;[08] ACCOMPLISHED A CONFORMITY INSPECTION ON SEAT TRACK HFAB-100-313; CONFORMS TO BOEING DWG 144A5350-3 REV NEW.;[09] PARTIAL STEP 8 INSTALLED ALL FASTNERS TORUQE REQUIRED;[10] UPDATED STEP 8;[11] REMOVED CORROSION ON PASSENGER CABIN SEAT TRACK CROWN ON TOP STA 578+2; RBL 45; WL 208. PER SRM 51-10-02-0G-0. MAX MATERIAL REMOVED WAS L=5' BY W+ .5' BY D .025' OUT OF LIMITS PER SRM 53-00-52-1A-1. MEASURED DEPTH WITH DIAL DEPTH GAUGE ID# ATS1225; DUE 09/2024 AND MAINTENANCE WAS ACCOMPLISHED ON STEPS 1-8;[12] VERIFIED JOB COMPLETE<BR><BR>VERIFIED MEASUREMENT TABLE

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